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Monday, June 20 • 2:55pm - 3:40pm
The Dockerfile Explosion and the Need for Higher Level Tools
Dockerfiles are great. They provide a zero-barrier-to-entry format for
describing a single Docker image which is immediately clear to anyone
reading them. But with that simplicity comes problems that become
apparent as your adoption of Docker gathers pace.

* Dockerfiles can inherit from other docker images, but images are not
Dockerfiles
* Dockerfile provides no built-in mechanism for creating abstractions,
so as usage grows identical or similar instructions can be duplicated
across many files
* The Docker APi exposes a build endpoint, but the API is very course,
taking Dockerfile as the transport rather than exposing the individual
instructions
* Dockerfiles are just that, files. So they can come from anywhere

The one layer per line in a Dockerfile limitation can lead to an
explosion of layers, which fail to take advantage of the promised
space and performance benefits.

Speakers
avatar for Gareth Rushgrove

Gareth Rushgrove

Senior Software Engineer, Puppet Labs
Gareth Rushgrove is a senior software engineer at Puppet Labs. He works remotely from Cambridge, UK, building interesting tools for people to better manage infrastructure. Previously he worked for the UK Government Digital Service focused on infrastructure, operations and information security. When not working he can be found writing the Devops Weekly newsletter or hacking on software in new-fangled programming languages. | | Gareth tweets at... Read More →


Monday June 20, 2016 2:55pm - 3:40pm
Ballroom 6A